@if(count($errors)>0)
    <div class="alert alert-danger">
        <div class="mt-2 mb-2"><b>有错误发生：</b></div>
        <ul class="mt-2 mb-2">
            @foreach($errors->all() as $error)
                <li class="glyphicon glyphicon-remove">{{ $error }}</li>
            @endforeach
        </ul>
    </div>
@endif
